Aroma odor generator

Aromatic scent generators are instruments that go beyond space and distance. Sometimes when you take the subway by subway, many people will spray perfume, some are more comfortable and pleasant, some are the kind of disgusting scent, these are our sense of smell Come to feel, with the development of instrumentation now, has produced a generator that can produce aroma. The aromatic odor generator is not currently widely known by the public.

Gas Generation and Propagation To understand odor electronization, we must first understand how odors are produced and transmitted. How olfactory organs perceive odors? Prof. Luo Dehan is a bionic olfactory/taste sensor technology in the School of Information Engineering, Guangdong University of Technology. The leader of the research department has been engaged in the research of machine olfactory/taste sensing theory, technology and application for many years. In the interview, Professor Luo told the author that the odor is the reaction of chemical molecules in the olfactory organs. When molecules of certain substances diffuse into the air, they are sent to our nasal cavity by air and stimulate the nerves of humans, so our noses recognize this smell. Different substances emit different odor molecules. Because of the different structures of these odor molecules, their properties are different.

Probability of Odor Identification Prof. Luo further explained that the necessary condition for the human body to discriminate odors is that the odorous substances must continuously volatilize molecules into the air and be absorbed into the nasal cavity, and then reach the brain through the olfactory nerves. The olfactory sensation is formed by the brain. The human brain can discern and remember a wide variety of different odors because people have a genetic group of about 1,000 different genes (about 3% of human genes), and they produce nearly a thousand odorant receptor types ( Note: All odor receptors are related proteins, but there are differences in specific details. This can explain why they can be triggered by different odor molecules). These receptors are located on odorant receptor cells and are specifically designed to discriminate inhaled odor molecules. The information is then passed on to the olfactory bulb, which serves as a transit station for the nose and brain. There is an exquisite structure of "smell maps." It helps the brain to accurately recognize these odors and enable people to recognize about 10,000 different flavors.

Olfactory composition The human body olfaction system receives odor signals from olfactory receptors. The human olfactory receptors are olfactory epithelium located on the upper nasal meatus and the upper part of the nasal septum. From the perspective of bionics, the composition and mechanism of human olfactory receptors can be summarized in three parts: (1) nasal epithelial tissue (primary), which is the first place to receive gas and produce signals; (2) olfactory ball (secondary) The type of gas is formed here by "mirrors"; (3) The cortex, where information is formed and stored. Through this process, various odors are recognized by the human body.

Electronic Principle With the continuous improvement of science and technology, odor electronization can be achieved. Prof. Luo told the reporter that any odor has its own unique properties. It can physically or chemically react with a certain chemical substance, causing a change in a certain physical quantity (such as changes in quality, color, electrical characteristics, etc.), through a specific signal. The conversion mechanism can convert it into electrical signals so that it can be transmitted electronically. At present, the method of realization of "odour electronization" can be summarized into three types: bionic method, digital method, and combination of bionics and digitization. The bionics method is to imitate the biological olfactory system. It can recognize and remember any mixed odors of different ingredients in real time, and use the Internet to transmit information. Then the odor is synthesized by the odor elements at the receiving terminal. The digital method is to analyze the limited types of odors. Form odor characteristics database. In operation, the odor sending end detects the odor characteristics and transmits the odor signature number over the Internet. The receiving terminal selects the stored odor from the odor characteristic database according to the odor signature number for playback; the combination of bionics and digitization passes through the odor sending end. Bionic olfactory devices detect odors in real time, use the Internet to transfer odor information, and listen to odors from the odor library at the receiving terminal.